What was sex ratio according to 2011 census?

Explanation

**Step-by-Step Solution:**

1. **Understanding Sex Ratio**: The sex ratio is defined as the ratio of males to females in a population. It can be expressed in two ways:
- Males per 100 females (e.g., 100 males for every x females).
- Females per 1000 males (e.g., x females for every 1000 males).

2. **Identifying the Census Year**: The question specifically asks for the sex ratio according to the 2011 census.

...